Home / 1,615.38-2,423.08-1,292.79

Finding the Fourth Proportional to 1,615.38, 2,423.08 and 1,292.79

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Solution

The fourth proportional to 1,615.38, 2,423.08 and 1,292.79 is: 1,939.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,615.38 : 2,423.08 = 1,292.79 : x
  2. Step 2: Convert to fraction form
    1,615.38/2,423.08 = 1,292.79/x
  3. Step 3: Cross multiply
    1,615.38x = 2,423.08 × 1,292.79
  4. Step 4: Simplify right side
    1,615.38x = 3,132,544.30
  5. Step 5: Solve for x
    x = 3,132,544.30/1,615.38
  6. Step 6: Final answer
    x = 1,939.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.